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does bullet speed change with altitude
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<blockquote data-quote="eshell" data-source="post: 310854" data-attributes="member: 5747"><p>I'd agree with Rijndael.</p><p></p><p>I shoot through variable air densities that occasionally dip below sea level (certain days at Quantico) to air densities that approach 6,000'.</p><p></p><p>With your .260 (I shoot a .260 and a 6.5-284), it would not surprise me to see you experience 2-3 moa variation in impact at even 1,000 yards between extremes like this. Air density is substantially affected by altitude, temperature and barometric pressure and a certain combination of these factors could cause unexpected misses. </p><p></p><p>I too monitor Density Altitude, which I use in conjunction with ballistic tables run at various altitudes. I simply check the environmental factors and turn to the correct chart.</p></blockquote><p></p>
[QUOTE="eshell, post: 310854, member: 5747"] I'd agree with Rijndael. I shoot through variable air densities that occasionally dip below sea level (certain days at Quantico) to air densities that approach 6,000'. With your .260 (I shoot a .260 and a 6.5-284), it would not surprise me to see you experience 2-3 moa variation in impact at even 1,000 yards between extremes like this. Air density is substantially affected by altitude, temperature and barometric pressure and a certain combination of these factors could cause unexpected misses. I too monitor Density Altitude, which I use in conjunction with ballistic tables run at various altitudes. I simply check the environmental factors and turn to the correct chart. [/QUOTE]
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does bullet speed change with altitude
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